Convert batchrename to bash and rename it (#495)

plugins/.nmv

@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 # Description: An almost fully POSIX compliant batch file renamer
 #
@@ -11,7 +11,7 @@
 #    4. Can remove files
 #    5. Switch number pairs to swap filenames
 #
-# Shell: POSIX compliant
+# Shell: bash
 # Author: KlzXS
 
 EDITOR="${EDITOR:-vi}"
@@ -39,9 +39,12 @@ else
 fi
 
 printf "%s" "$arr" | awk '{print NR " " $0}' > "$dst_file"
-arr=$(printf "%s" "$arr" | sed "s/'/'\\\\''/g;s/^\(.*\)$/'\1'/" | tr '\n' ' ')
 
-eval "set -- $arr"
+items=("~")
+while IFS='' read -r line; do
+	items+=("$line");
+done < <(printf "%s\n" "$arr")
+
 $EDITOR "$dst_file"
 
 while read -r num name; do
@@ -60,7 +63,7 @@ while read -r num name; do
 		exit 1
 	fi
 
-	src=$(eval printf "%s" "\"\${$num}\"")
+	src=${items[$num]}
 
 	if [ -z "$src" ]; then
 		printf "%s: unknown item number %s\n" "$0" "$num" > /dev/stderr
@@ -73,24 +76,7 @@ while read -r num name; do
 		if [ ! -e "$src" ] && [ ! -L "$src" ]; then
 			printf "%s: %s does not exit\n" "$0" "$src" > /dev/stderr
 
-			c=1
-			new_args=""
-			while [ $c -le $# ]; do
-				tmp=$(eval printf "%s" "\"\${$c}\"")
-				if [ "$c" -eq "$num" ]; then
-					new_args="$new_args ''"
-				else
-					if [ -z "$tmp" ]; then
-						tmp="''"
-					else
-						tmp=$(printf "%s" "$tmp" | sed "s/'/'\\\\''/g;s/^\(.*\)$/'\1'/")
-					fi
-					new_args="$new_args $tmp"
-				fi
-				c=$((c+1))
-			done
-
-			eval "set -- $new_args"
+			unset "items[$num]"
 			continue
 		fi
 
@@ -111,25 +97,11 @@ while read -r num name; do
 				exit_status=1
 			fi
 			
-			c=1
-			new_args=""
-			while [ $c -le $# ]; do
-				item=$(eval printf "%s" "\"\${$c}\"")
-				if [ "$item" = "$name" ]; then
-					item=$(printf "%s" "$tmp" | sed "s/'/'\\\\''/g;s/^\(.*\)$/'\1'/")
-					new_args="$new_args $item"
-				else
-					if [ -z "$item" ]; then
-						item="''"
-					else
-						item=$(printf "%s" "$item" | sed "s/'/'\\\\''/g;s/^\(.*\)$/'\1'/")
-					fi
-					new_args="$new_args $item"
+			for key in "${!items[@]}"; do
+				if [ "${items[$key]}" = "$name" ]; then
+					items[$key]="$tmp"
 				fi
-				c=$((c+1))
 			done
-
-			eval "set -- $new_args"
 		fi
 
 		dir=$(dirname "$name")
@@ -140,55 +112,24 @@ while read -r num name; do
 			printf "%s: failed to rename %s to %s: %s\n" "$0" "$name" "$tmp" "$!" > /dev/stderr
 			exit_status=1
 		else
-			printf "'%s' -> '%s'\n" "$src" "$name"
 			if [ -d "$name" ]; then
-				c=1
-				new_args=""
-				while [ $c -le $# ]; do
-					tmp=$(eval printf "\"\${$c}\"")
-					if [ -z "$tmp" ]; then
-						tmp="''"
-					else
-						tmp=$(printf "%s" "$tmp" | sed "s|^$src\(\$\|\/\)|$name\1|;s/'/'\\\\''/g;s/^\(.*\)$/'\1'/")
-					fi
-					new_args="$new_args $tmp"
-					c=$((c+1))
+				for key in "${!items[@]}"; do
+					items[$key]=$(printf "%s" "${items[$key]}" | sed "s|^$src\(\$\|\/\)|$name\1|")
 				done
 				
-				eval "set -- $new_args"
 				printf "'%s' => '%s'\n" "$src" "$name"
+			else
+				printf "'%s' -> '%s'\n" "$src" "$name"
 			fi
 		fi
 	fi
 
-	c=1
-	new_args=""
-	while [ $c -le $# ]; do
-		tmp=$(eval printf "%s" "\"\${$c}\"")
-		if [ "$c" -eq "$num" ]; then
-			new_args="$new_args ''"
-		else
-			if [ -z "$tmp" ]; then
-				tmp="''"
-			else
-				tmp=$(printf "%s" "$tmp" | sed "s/'/'\\\\''/g;s/^\(.*\)$/'\1'/")
-			fi
-			new_args="$new_args $tmp"
-		fi
-		c=$((c+1))
-	done
-
-	eval "set -- $new_args"
+	unset "items[$num]"
 done <"$dst_file"
 
-c=1
-new_args=""
-while [ $c -le $# ]; do
-	tmp=$(eval printf "%s" "\"\${$c}\"")
-	if [ -n "$tmp" ]; then
-		rm -ri "$tmp"
-	fi
-	c=$((c+1))
+unset "items[0]"
+for item in "${items[@]}"; do
+	rm -ri "$item"
 done
 
 rm "$dst_file"